WO2018107932A1 - Real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas - Google Patents
Real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Definitions
- the invention relates to the field of mine safety and monitoring and monitoring, in particular to a real-time automatic monitoring system and method for sound and electricity gas of coal rock power disaster.
- Coal mine rock and rock power disasters mainly include coal (rock) and gas (methane or carbon dioxide) protrusion, coal and gas pressure, impact ground pressure and so on.
- coal mine rock disasters such as mine gas outburst and impact ground pressure are becoming more and more serious and complex, and the disaster risk is obviously increased.
- some mines with no power disaster or obvious signs are now also Gradually emerged, seriously threatening the life safety of underground workers and the normal production of mines.
- the static method is mainly realized by drilling and observing some physical indexes in the borehole, including the cuttings magnification method, the initial gas velocity method for drilling gas, the gas desorption index method for cuttings and other comprehensive index methods.
- the continuity of these static methods is poor, the measurement needs to occupy a certain working time and space, the engineering quantity is large, the working time is also long, and it has certain influence on the production; the safety during operation is poor, and it is easy to induce during drilling. Dynamic disaster; the accuracy of prediction is low, and it is susceptible to the uneven distribution of labor and coal.
- the dynamic method prediction mainly analyzes and predicts the signals such as electromagnetic radiation, acoustic emission, microseismic, gas emission or gas concentration continuously.
- the advantages are obvious, and the signal continuity is good, and the monitoring process has little impact on production.
- they also have their own limitations.
- Microseismic, geophone, electromagnetic radiation and gas monitoring are independent. They have different adaptability and sensitivity to different environments and influencing factors. They are interfered by mining and drilling processes, electromechanical equipment and monitoring sensor movement. Different and more serious, and can not be accurately identified.
- the research shows that sound waves, electromagnetic radiation and gas have a good response to coal-rock dynamic disasters, but they are not completely synchronized.
- the multiple signals are complementary.
- the combination of the three can more fully reflect the stress, deformation and fracture process of coal and rock mass.
- the occurrence and failure of gas and the evolution process of coal-rock dynamic disasters can be combined with the trend method to warn the danger of coal-rock dynamic disasters. Due to the failure of simultaneous high-speed monitoring of multiple signals, interference signals such as electromechanical equipment, mobile sensors and mining activities cannot be automatically monitored and cannot be automatically and effectively identified.
- the anomalous area in front of the working face has a great impact on safe and efficient production. It is the main area where coal-rock gas dynamic disaster occurs.
- the anomalies such as the structure in front of the working face and the change of coal and rock gas mainly through borehole detection or geophysical exploration. Method to solve the problem of low detection and recognition accuracy for small and abnormally small areas, The dynamic influence is large and the real-time performance is poor. How to use the monitoring means to effectively monitor and identify the structure, high stress, coal thickness change, coal rock mass strength change and gas occurrence abnormality are also urgent problems to be solved.
- the present invention is directed to a demand and a problem existing in the prior art, and provides a real-time automatic monitoring system and method for coal and rock dynamic disaster sound and electricity gas, which can load and deform cracked coal rock in mining face Process, gas emission process, anomaly in front of working face, evolution process of coal and rock dynamic disasters, effectiveness of measures, etc.
- Effective, non-contact, continuous uninterrupted and remote monitoring, evaluation and early warning, equipment installation and operation are convenient, automation and intelligence High degree of conversion, no impact on production, low cost.
- the present invention includes an automatic monitoring system and an automatic monitoring method
- Acoustic and electric gas real-time automatic monitoring system for coal and rock dynamic disasters including acoustic wave probe, electromagnetic antenna, gas sensor, communication substation, substation power supply, optical fiber network, monitoring center machine, monitoring terminal, current sensor, voltage sensor and acoustic electricity gas Synchronous monitor; acoustic probe, electromagnetic antenna, current sensor, voltage sensor and gas sensor are connected with corresponding sensor input interfaces of the acoustic electric gas synchronous monitor; the communication interface of the acoustic electric gas synchronous monitor is connected with the input end of the communication substation, The communication substation is connected through the optical fiber network, the switch and the monitoring center machine and the monitoring terminal; the substation power is connected with the voltage stabilizing circuit of the acoustic electricity gas synchronous monitor; the acoustic wave probe, the electromagnetic antenna, the gas sensor, the current sensor and the voltage sensor and sound
- the electric gas synchronous monitor is connected to form a monitor, and the plurality of monitors are arranged in the underground mining face or the roadway monitoring area.
- the acoustic electric gas synchronous monitor comprises an acoustic wave probe interface, an electromagnetic antenna interface, a gas sensor interface, a current sensor interface, a voltage sensor interface, a signal conditioner, a signal conversion circuit, a microprocessor, a data memory, a display and a communication interface
- the voltage stabilizing circuit is connected with the input end of the acoustic signal conditioner, the electromagnetic antenna interface is connected with the input end of the electromagnetic signal conditioner, and the gas sensor interface, the current sensor interface and the voltage sensor interface are respectively connected with the corresponding signal conversion circuit;
- the signal conditioner And the output end of the signal conversion circuit is connected to the input end of the microprocessor;
- the communication interface input end, the display, the keyboard and the data memory are all connected with the I/O interface of the microprocessor; the output end of the microprocessor is connected with the communication interface;
- the circuit provides the required DC power for the acoustic-electric gas synchronous monitor and sensor.
- the integrated automatic monitoring of acoustic and electric gas signals is realized, which ensures the synchronization of effective signal monitoring; the power supply condition of the cable is monitored by the access voltage sensor, and the current sensor is connected to monitor the working condition of the electromechanical equipment, thereby realizing the electrification of the electromechanical equipment in the monitoring area. And the working conditions, realizing automatic real-time monitoring of various interferences such as electromagnetic and acoustic waves; through the abrupt characteristics of acoustic waves and electromagnetic signals, spectral characteristics, combined with voltage and current monitoring results, automatic identification of interference signals, probes and antenna movements is achieved; Monitoring, filtering and data analysis can obtain effective sonic signals and effective electromagnetic signals.
- Figure 1 is a monitoring flow chart of the present invention.
- FIG. 2 is a layout view of a field monitoring instrument of the present invention.
- Figure 3 is a block diagram showing the construction of the system of the present invention.
- Acoustic and electric gas real-time automatic monitoring system for coal and rock dynamic disasters including acoustic wave probe, electromagnetic antenna, gas sensor, current sensor, voltage sensor, acoustic and electric gas synchronous monitor, communication substation, substation power supply, optical fiber network, monitoring center machine, Monitoring terminal; acoustic wave probe 1, electromagnetic antenna 2, current sensor 4, voltage sensor 5 and gas sensor 3 are connected with corresponding sensor input interfaces of acoustic electric gas synchronous monitor 6; communication interface and communication of acoustic electric gas synchronous monitor 6 The input end of the substation 7 is connected, and the communication substation 7 is connected to the monitoring center machine 10 and the monitoring terminal unit 11 through the optical fiber network 9 and the switch 13; the substation power supply 8 is connected to the voltage stabilizing circuit of the acoustic electric gas synchronous monitor 6; The acoustic wave probe 1, the electromagnetic antenna 2, the gas sensor 3, the current sensor 4 and the voltage sensor 5 are connected with the acoustic-electric gas synchronous monitor 6 to form a monitor, and the plurality of monitors
- the acoustic electric gas synchronous monitor comprises an acoustic wave probe interface, an electromagnetic antenna interface, a gas sensor interface, a current sensor interface, a voltage sensor interface, a signal conditioner, a signal conversion circuit, a microprocessor, a data memory, and a display
- the circuit connection; the output of the signal conditioner and the signal conversion circuit is connected to the input of the microprocessor; the input end of the communication interface, the display, the keyboard and the data memory are all connected with the I/O interface of the microprocessor; the output of the microprocessor is The communication interface is connected; the voltage stabilizing circuit provides the required DC power for the acoustic-electric gas synchronous monitor and the sensor.
- the electromagnetic antenna can be a broadband antenna or an ultra low frequency antenna.
- the ultra-low frequency antenna has a passband of 30 to 1000 Hz, high sensitivity and directional characteristics.
- the upper limit frequency of the broadband antenna is not less than 500 kHz, the bandwidth is not less than 500 kHz, the sensitivity is high, and the orientation is characterized.
- the sonic probe can be an acoustic emission probe, a geophone probe or a microseismic probe.
- the amplification factor can be adjusted, and the output is directly sent to the analog-to-digital converter of the microprocessor for conversion.
- It is composed of a microprocessor, a signal conditioner, a signal converter, a display, a data memory, a signal output circuit, a power supply, a button, etc., thereby realizing synchronous acquisition, display, and storage of sound waves, electromagnetic waves, gas, current, voltage signals, and waveforms. And output.
- sampling rate adjustable from 1 kHz to 1 MHz to meet different needs
- SD/TF card is used as the storage device, and the data storage capacity is greater than 8 GB;
- the monitor is powered by an external power supply, and can also directly use the power supply provided by the communication substation, and the working voltage is 15 to 32 VDC.
- a fixed +5V power supply is provided through the wide voltage input power supply module K7805 for use in the digital circuit section.
- a fixed +12V power supply is provided through the wide voltage input power supply module K7812 for use in the signal conditioner section.
- RS485 signal interface 4 ⁇ 20mA signal interface, 200 ⁇ 1000Hz signal interface, CAN bus interface, Ethernet interface, which can adapt to different monitoring system requirements, all can be carried out by cable and communication substation. Connect, real-time transmission of test data to the monitoring center.
- the communication substation is a downhole substation in the mine monitoring and monitoring system, which can receive monitoring data and waveform data from the acoustic electricity gas synchronous monitor and upload it to the monitoring center machine.
- the monitoring center machine is composed of a data storage server, a data real-time analysis server, a data backup server, and a system management server.
- the automatic monitoring method of the present invention is:
- the acoustic and electric gas synchronous monitor is connected to the acoustic wave probe, the electromagnetic antenna and the gas sensor, and synchronously receives the real-time signals and waveforms of the acoustic wave, electromagnetic radiation and gas concentration, and can synchronously reflect the loading, deformation and rupture of the coal rock mass in front of the working face, and the gas seepage out.
- the interference of electromechanical equipment, sensor displacement and the influence of mining surface mining disturbance are recognized: when the monitored sound waves and electromagnetic signals are abrupt, and the sound and electricity are The signal has the spectral characteristics of the interference of the electromechanical equipment.
- the voltage and current signals are also abrupt, it indicates that the acoustic wave and electromagnetic signal are caused by the interference of the electromechanical equipment.
- the monitored acoustic and electromagnetic signals are abrupt, the acoustic and electrical signals have artificially shifted the characteristic spectrum of the sensor.
- the acoustic wave and electromagnetic signal are caused by the movement of the acoustic probe and the electromagnetic antenna; when the acoustic, electromagnetic and gas signals have the characteristics of sudden increase and stable attenuation, it indicates that the working face is performing mining activities; monitoring The obtained acoustic wave signal and electromagnetic signal filter out the interference signal to obtain an effective acoustic wave signal and an effective electromagnetic signal.
- an acoustic wave probe, an electromagnetic antenna, and a gas sensor on the measuring point or working surface to be monitored. Align the effective receiving direction of the electromagnetic antenna with the monitored area of the coal rock body, and fix the antenna. The distance between the antenna and the measured area is not more than 30.
- the meter is suitable for the sound wave probe according to the measured frequency band, and the acoustic wave signal in the coal rock is monitored.
- the gas sensor is installed according to the requirements of the “Safety Regulations for Coal Mines”; the power cable of the electromechanical equipment is installed in the monitoring area.
- the acoustic and electric gas synchronous monitor synchronously monitors the acoustic wave, electromagnetic, gas concentration, current and voltage signals in the measuring point area or working surface, and uploads the number to the monitoring center machine; the monitoring center machine analyzes the changes of each signal and identifies the interference of the electromechanical equipment.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
A real-time automatic monitoring system and method for coal-rock power disaster acoustic-electricity gas, belonging to the field of mine safety and monitoring and control. The system is composed of an acoustic wave probe (1), an electromagnetic antenna (2), a gas sensor (3), a current sensor (4), a voltage sensor (5), an acoustic-electricity gas synchronization monitor (6), a communication substation (7), a substation power source (8), a monitoring centre machine (10), etc. The system receives acoustic waves, electromagnetic radiation and gas signals by means of the acoustic-electricity gas synchronization monitor (6), and can access the voltage sensor (5) to monitor the energization of a power cable and access the current sensor (4) to monitor the working of an electromechanical device. The system identifies the movement of the probe (1) and the antenna (2) and the mining activity through sudden changes of the acoustic waves, electromagnetic and gas signals and the characteristics of acoustic-electricity spectrum in combination with the changes of current and voltage signals. The system pre-warns an abnormal area in front of a working face and the danger of a coal-rock power disaster through effective acoustic waves and electromagnetic signal changes and spectrum characteristics in combination with gas signal change characteristics. The present invention can be applied to the monitoring of an abnormal area in front of a working face and the monitoring and pre-warning of coal and gas outbursts and rock bursts.
Description
本发明涉及一种矿山安全及监测监控领域，特别是一种煤岩动力灾害声电瓦斯实时自动监测系统及方法。The invention relates to the field of mine safety and monitoring and monitoring, in particular to a real-time automatic monitoring system and method for sound and electricity gas of coal rock power disaster.
煤矿煤岩动力灾害主要包括煤(岩)与瓦斯(甲烷或二氧化碳)突出、煤与瓦斯压出、冲击地压等。随着矿山采掘深度及开采强度的加大，矿井瓦斯突出、冲击地压等煤岩动力灾害日趋严重且复杂，灾害危险性明显增大，同时原来一些没有动力灾害或征兆不明显的矿井现在也逐渐显现，严重威胁着井下工人的生命安全和矿井的正常生产。Coal mine rock and rock power disasters mainly include coal (rock) and gas (methane or carbon dioxide) protrusion, coal and gas pressure, impact ground pressure and so on. With the increase of mining depth and mining intensity, the coal mine rock disasters such as mine gas outburst and impact ground pressure are becoming more and more serious and complex, and the disaster risk is obviously increased. At the same time, some mines with no power disaster or obvious signs are now also Gradually emerged, seriously threatening the life safety of underground workers and the normal production of mines.
我国目前对于煤岩动力灾害的预测可大体分为静态法和动态法两类。China's current predictions of coal-rock dynamic disasters can be broadly divided into static and dynamic methods.
静态法主要通过打钻，观测钻孔中一些物理指标来实现的，包括钻屑倍率法、钻孔瓦斯涌出初速度法、钻屑瓦斯解吸指标法及其它综合指标法。这些静态方法测值的连续性差，测定需占用一定的作业时间和空间，工程量较大，作业时间也较长，对生产有一定的影响；操作过程中的安全性差，在打钻时易诱发动力灾害；预测的准确性较低，易受人工及煤体分布不均匀的影响。The static method is mainly realized by drilling and observing some physical indexes in the borehole, including the cuttings magnification method, the initial gas velocity method for drilling gas, the gas desorption index method for cuttings and other comprehensive index methods. The continuity of these static methods is poor, the measurement needs to occupy a certain working time and space, the engineering quantity is large, the working time is also long, and it has certain influence on the production; the safety during operation is poor, and it is easy to induce during drilling. Dynamic disaster; the accuracy of prediction is low, and it is susceptible to the uneven distribution of labor and coal.
动态法预测主要通过连续监测电磁辐射、声发射、微震、瓦斯涌出量或瓦斯浓度等信号进行分析预测，与静态法相比优势明显，具有信号连续性好，监测过程对生产影响小等特点。但也有各自的局限性，微震、地音、电磁辐射和瓦斯监测是独立的，对不同环境、影响因素的适应性和敏感性不同，受采掘打钻工艺过程、机电设备及监测传感器移动等干扰不同且比较严重，且无法准确识别。The dynamic method prediction mainly analyzes and predicts the signals such as electromagnetic radiation, acoustic emission, microseismic, gas emission or gas concentration continuously. Compared with the static method, the advantages are obvious, and the signal continuity is good, and the monitoring process has little impact on production. However, they also have their own limitations. Microseismic, geophone, electromagnetic radiation and gas monitoring are independent. They have different adaptability and sensitivity to different environments and influencing factors. They are interfered by mining and drilling processes, electromechanical equipment and monitoring sensor movement. Different and more serious, and can not be accurately identified.
近些年来，煤岩电磁辐射、声波发射(微震、声发射、次声波、超声波等)和瓦斯涌出特性及其应用研究方面取得了较大的进展。In recent years, great progress has been made in the study of coal-rock electromagnetic radiation, acoustic emission (microseismic, acoustic emission, infrasound, ultrasonic, etc.) and gas emission characteristics and their applications.
研究表明，声波、电磁辐射及瓦斯对煤岩动力灾害有比较好的响应，但并非完全同步，多信号之间具有互补性，三者结合能够更全面反映煤岩体的受力、变形破裂过程、瓦斯赋存及涌出、煤岩动力灾害演化过程，采用临界值法与趋势法相结合能够预警煤岩动力灾害危险。由于受到多信号未能同步高速监测，机电设备、移动传感器及采掘活动等干扰信号未能自动监测与无法自动有效识别，有效信号识别困难，误报率高，使得目前的技术还无法满足矿井和采掘工作面对煤岩动力灾害多手段、准确有效、自动实时监测预警的需要，有效信号识别准确率及预警准确率有待进一步提高。The research shows that sound waves, electromagnetic radiation and gas have a good response to coal-rock dynamic disasters, but they are not completely synchronized. The multiple signals are complementary. The combination of the three can more fully reflect the stress, deformation and fracture process of coal and rock mass. The occurrence and failure of gas and the evolution process of coal-rock dynamic disasters can be combined with the trend method to warn the danger of coal-rock dynamic disasters. Due to the failure of simultaneous high-speed monitoring of multiple signals, interference signals such as electromechanical equipment, mobile sensors and mining activities cannot be automatically monitored and cannot be automatically and effectively identified. Effective signal identification is difficult and the false alarm rate is high, making the current technology unable to meet the mine and The mining work faces the need of multiple means, accurate and effective, automatic real-time monitoring and early warning of coal and rock dynamic disasters, and the effective signal recognition accuracy and early warning accuracy need to be further improved.
研究表明，声波和电磁信号的突变情况及其特有的频谱特征能够反映机电设备干扰及传感器移动情况，声电瓦斯信号的突变及衰减变化也能反映采掘扰动情况。但如何同步自动监测并准确识别各种有效信号和干扰信号、工艺过程，并根据多指标有效信号的变化趋势自动有效预警煤与瓦斯突出等煤岩动力灾害危险性，是急待解决的问题。Studies have shown that the abrupt changes of acoustic and electromagnetic signals and their unique spectral characteristics can reflect the interference of electromechanical devices and the movement of sensors. The sudden changes in attenuation of sound and electricity gas signals can also reflect the disturbance of mining. However, how to synchronously monitor and accurately identify various effective signals and interference signals, process, and automatically and effectively warn the risk of coal and rock dynamic disasters such as coal and gas outburst according to the trend of multi-indicator effective signals is an urgent problem to be solved.
另外，工作面前方的异常区域对安全高效生产影响非常大，是发生煤岩瓦斯动力灾害的主要区域，以前对工作面前方的构造、煤岩瓦斯变化等异常主要通过钻孔探测或地球物理探测的方法来解决，对小的和异常程度较小的区域探测及识别准确率低，对采掘活
动影响大，实时性差，如何能够利用监测的手段有效监测和识别构造、高应力、煤厚变化、煤岩体强度变化及瓦斯赋存异常等区域，也是急待解决的问题。In addition, the anomalous area in front of the working face has a great impact on safe and efficient production. It is the main area where coal-rock gas dynamic disaster occurs. Previously, the anomalies such as the structure in front of the working face and the change of coal and rock gas mainly through borehole detection or geophysical exploration. Method to solve the problem of low detection and recognition accuracy for small and abnormally small areas,
The dynamic influence is large and the real-time performance is poor. How to use the monitoring means to effectively monitor and identify the structure, high stress, coal thickness change, coal rock mass strength change and gas occurrence abnormality are also urgent problems to be solved.
发明内容Summary of the invention
技术问题：本发明是针对需求及现有技术中存在的问题，提供一种煤岩动力灾害声电瓦斯实时自动监测系统及方法，该系统及方法能够对采掘工作面煤岩受载及变形破裂过程、瓦斯涌出过程、工作面前方区域异常、煤岩动力灾害演化过程、措施有效性等进行有效、非接触、连续不间断及远程监测、评价与预警，设备安装及操作方便，自动化和智能化程度高，对生产无影响，费用低。Technical Problem: The present invention is directed to a demand and a problem existing in the prior art, and provides a real-time automatic monitoring system and method for coal and rock dynamic disaster sound and electricity gas, which can load and deform cracked coal rock in mining face Process, gas emission process, anomaly in front of working face, evolution process of coal and rock dynamic disasters, effectiveness of measures, etc. Effective, non-contact, continuous uninterrupted and remote monitoring, evaluation and early warning, equipment installation and operation are convenient, automation and intelligence High degree of conversion, no impact on production, low cost.
技术方案：本发明的目的是这样实现的：本发明包括自动监测系统和自动监测方法；Technical Solution: The object of the present invention is achieved as follows: the present invention includes an automatic monitoring system and an automatic monitoring method;
煤岩动力灾害声电瓦斯实时自动监测系统，包括声波探头、电磁天线、瓦斯传感器、通信分站、分站电源、光纤网、监测中心机、监测终端机、电流传感器、电压传感器和声电瓦斯同步监测仪；声波探头、电磁天线、电流传感器、电压传感器和瓦斯传感器与声电瓦斯同步监测仪的相应传感器输入接口连接；声电瓦斯同步监测仪的通信接口与通信分站的输入端连接，通信分站通过光纤网、交换机与监测中心机和监测终端机连接；分站电源与声电瓦斯同步监测仪的稳压电路连接；声波探头、电磁天线、瓦斯传感器、电流传感器及电压传感器与声电瓦斯同步监测仪连接构成监测器，多个监测器布置在井下采掘工作面或巷道监测区域内。Acoustic and electric gas real-time automatic monitoring system for coal and rock dynamic disasters, including acoustic wave probe, electromagnetic antenna, gas sensor, communication substation, substation power supply, optical fiber network, monitoring center machine, monitoring terminal, current sensor, voltage sensor and acoustic electricity gas Synchronous monitor; acoustic probe, electromagnetic antenna, current sensor, voltage sensor and gas sensor are connected with corresponding sensor input interfaces of the acoustic electric gas synchronous monitor; the communication interface of the acoustic electric gas synchronous monitor is connected with the input end of the communication substation, The communication substation is connected through the optical fiber network, the switch and the monitoring center machine and the monitoring terminal; the substation power is connected with the voltage stabilizing circuit of the acoustic electricity gas synchronous monitor; the acoustic wave probe, the electromagnetic antenna, the gas sensor, the current sensor and the voltage sensor and sound The electric gas synchronous monitor is connected to form a monitor, and the plurality of monitors are arranged in the underground mining face or the roadway monitoring area.
所述的声电瓦斯同步监测仪包括声波探头接口、电磁天线接口、瓦斯传感器接口、电流传感器接口、电压传感器接口、信号调理器、信号转换电路、微处理器、数据存储器、显示器和通信接口、稳压电路；声波探头接口与声波信号调理器输入端连接，电磁天线接口与电磁信号调理器输入端连接，瓦斯传感器接口、电流传感器接口、电压传感器接口分别与相应信号转换电路连接；信号调理器和信号转换电路的输出端与微处理器输入端连接；通信接口输入端、显示器、键盘和数据存储器均与微处理器的I/O接口连接；微处理器输出端与通信接口连接；稳压电路为声电瓦斯同步监测仪和传感器提供所需直流电源。The acoustic electric gas synchronous monitor comprises an acoustic wave probe interface, an electromagnetic antenna interface, a gas sensor interface, a current sensor interface, a voltage sensor interface, a signal conditioner, a signal conversion circuit, a microprocessor, a data memory, a display and a communication interface, The voltage stabilizing circuit is connected with the input end of the acoustic signal conditioner, the electromagnetic antenna interface is connected with the input end of the electromagnetic signal conditioner, and the gas sensor interface, the current sensor interface and the voltage sensor interface are respectively connected with the corresponding signal conversion circuit; the signal conditioner And the output end of the signal conversion circuit is connected to the input end of the microprocessor; the communication interface input end, the display, the keyboard and the data memory are all connected with the I/O interface of the microprocessor; the output end of the microprocessor is connected with the communication interface; The circuit provides the required DC power for the acoustic-electric gas synchronous monitor and sensor.
利用煤岩动力灾害声电瓦斯实时自动监测系统的自动监测方法，在需要监测的测点或工作面安装声波探头、电磁天线、瓦斯传感器，在动力电缆上安装电流传感器和电压传感器，分别接入声电瓦斯同步监测仪的相应传感器输入接口，连接通信分站、分站电源、交换机和监测中心机；声电瓦斯同步监测仪同步接收声波、电磁、瓦斯浓度、电压和电流信号，并将数据实时上传到监测中心机；通过声波、电磁辐射和瓦斯浓度实时信号及波形，能够同步反映工作面前方煤岩体受载、变形破裂、瓦斯渗流涌出情况、信号波形特征、频谱特征及其变化，通过电压信号监测动力电缆通电情况，电流信号监测机电设备工作情况；监测中心机分析各信号变化情况，识别机电设备干扰、采掘活动及探头、天线移设情况和有效信号：当监测的声波、电磁信号发生突变，且声电信号具有机电设备干扰的频谱特征，电压和电流信号也发生突变时，表明声波、电磁信号为机电设备干扰所致；当监测的声波、电磁信号发生突变，声电信号具有人为移设传感器特征频谱，电压和电流信号未发生突变时，表明声波、电磁信号为声波探头和电磁天线移动所致；当声波、电磁和瓦斯信号具有突变增长及稳定衰减变化特征时，表明工作面进行采掘活动；监测得到的声波信号和电磁信号滤除干扰
后得到有效声波信号和有效电磁信号；通过有效声波信号和有效电磁信号变化及频谱特征，结合瓦斯信号变化特征预警工作面前方异常区域及煤与瓦斯突出等煤岩动力灾害危险性：当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续或波动式增长趋势，且信号强度和趋势变化超过区域异常相应临界值时，表明工作面前方为地质异常区域；当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续、波动式增长趋势，且信号强度或趋势变化超过动力灾害危险相应临界值时，表明有动力灾害危险性。Using the automatic monitoring method of real-time automatic monitoring system for coal-fired power disaster sound and electricity gas, install acoustic wave probe, electromagnetic antenna and gas sensor on the measuring point or working surface to be monitored, and install current sensor and voltage sensor on the power cable, respectively Corresponding sensor input interface of sound and electricity gas synchronous monitor, connecting communication substation, substation power supply, switch and monitoring center machine; acoustic and electric gas synchronous monitor synchronously receiving sound wave, electromagnetic, gas concentration, voltage and current signals, and data Real-time upload to the monitoring center machine; through real-time signals and waveforms of sound waves, electromagnetic radiation and gas concentration, it can synchronously reflect the loading, deformation and rupture of coal rock mass in front of the working face, gas flow and seepage, signal waveform characteristics, spectrum characteristics and their changes The power signal is monitored by the voltage signal, the current signal monitors the working condition of the electromechanical equipment; the monitoring center analyzes the changes of each signal, identifies the interference of the electromechanical equipment, the mining activity and the probe, the antenna shifting situation and the effective signal: when the sound wave is monitored, The electromagnetic signal is abrupt, and The electrical signal has the spectral characteristics of the interference of the electromechanical equipment. When the voltage and current signals are also abrupt, it indicates that the acoustic wave and the electromagnetic signal are caused by the interference of the electromechanical equipment. When the monitored acoustic and electromagnetic signals are abrupt, the acoustic and electrical signals have the characteristics of the artificially displaced sensor. When the spectrum, voltage and current signals are not abrupt, it indicates that the acoustic wave and electromagnetic signal are caused by the movement of the acoustic probe and the electromagnetic antenna; when the acoustic, electromagnetic and gas signals have the characteristics of sudden increase and stable attenuation, it indicates that the working face is performing mining activities; Monitoring the obtained acoustic and electromagnetic signals to filter out interference
After obtaining the effective acoustic signal and the effective electromagnetic signal; through the effective acoustic signal and the effective electromagnetic signal change and spectral characteristics, combined with the change characteristics of the gas signal, the anomalous area in front of the working face and the coal and gas outburst and other coal-rock dynamic hazard risks: when the effective sound wave Two or more of the electromagnetic signal and the gas signal show a continuous or volatility growth trend, and the signal intensity and trend change exceed the corresponding critical value of the regional anomaly, indicating that the front of the working face is a geological anomaly area; when effective sound waves, electromagnetic signals and gas Two or more of the signals show a continuous, volatility growth trend, and when the signal strength or trend changes exceed the corresponding critical value of the dynamic disaster risk, it indicates the risk of dynamic disaster.
有益效果与优点：能够全过程监测工作面各种信号——声电瓦斯信号，自动识别有效和干扰信号，并根据声电瓦斯有效信号变化趋势自动识别工作面前方异常区域、预警煤岩动力灾害的危险性。Advantageous effects and advantages: It can monitor all kinds of signals on the working surface - acoustic and electric gas signals in the whole process, automatically identify the effective and interfering signals, and automatically identify the abnormal area in front of the working face according to the trend of the effective signal of the acoustic and electric gas, and warn the coal and rock dynamic disaster The danger.
实现了声电瓦斯信号的一体化自动监测，保证了有效信号监测的同步性；通过接入电压传感器监测电缆通电情况，接入电流传感器监测机电设备工作情况，实现了监测区域内机电设备的带电及工作情况，实现了电磁及声波等各种干扰的自动实时监测；通过声波和电磁信号突变特征、频谱特征，结合电压、电流监测结果，实现了自动识别干扰信号、探头及天线移动情况；通过监测、滤波和数据分析能够得到了有效声波信号和有效电磁信号，通过有效声波信号和有效电磁信号变化及频谱特征，除实现自动监测预警煤与瓦斯突出等煤岩动力灾害危险性性外，也能识别预警工作面前方异常区域，实现了工作面前方异常区域的实时自动监测与识别，能够显著提高煤岩动力灾害危险性的自动化程度和预警准确率、可靠性。The integrated automatic monitoring of acoustic and electric gas signals is realized, which ensures the synchronization of effective signal monitoring; the power supply condition of the cable is monitored by the access voltage sensor, and the current sensor is connected to monitor the working condition of the electromechanical equipment, thereby realizing the electrification of the electromechanical equipment in the monitoring area. And the working conditions, realizing automatic real-time monitoring of various interferences such as electromagnetic and acoustic waves; through the abrupt characteristics of acoustic waves and electromagnetic signals, spectral characteristics, combined with voltage and current monitoring results, automatic identification of interference signals, probes and antenna movements is achieved; Monitoring, filtering and data analysis can obtain effective sonic signals and effective electromagnetic signals. In addition to the effective sound wave signals and effective electromagnetic signal changes and spectral characteristics, in addition to the automatic monitoring and early warning of coal and gas outburst and other coal-rock dynamic disaster risks, It can identify the anomalous area in front of the warning surface and realize the real-time automatic monitoring and identification of the abnormal area in front of the working face, which can significantly improve the automation degree, early warning accuracy and reliability of the risk of coal-rock dynamic disaster.
图1是本发明的监测流程图。Figure 1 is a monitoring flow chart of the present invention.
图2是本发明的现场监测仪器布置图。2 is a layout view of a field monitoring instrument of the present invention.
图3是本发明系统的构成结构图。Figure 3 is a block diagram showing the construction of the system of the present invention.
图中：1、声波探头；2、电磁天线；3、瓦斯传感器；4、电流传感器；5、电压传感器；6、声电瓦斯同步监测仪；7、通信分站；8、分站电源；9、光纤网；10、监测中心机；11、监测终端机；12、电缆；13、交换机。In the figure: 1, acoustic probe; 2, electromagnetic antenna; 3, gas sensor; 4, current sensor; 5, voltage sensor; 6, acoustic and electric gas synchronous monitor; 7, communication substation; 8, substation power supply; , optical fiber network; 10, monitoring center machine; 11, monitoring terminal; 12, cable; 13, switch.
下面结合附图对本发明的一个实例作进一步的描述：An example of the present invention will be further described below with reference to the accompanying drawings:
煤岩动力灾害声电瓦斯实时自动监测系统，包括声波探头、电磁天线、瓦斯传感器、电流传感器、电压传感器、声电瓦斯同步监测仪、通信分站、分站电源、光纤网、监测中心机、监测终端机；声波探头1、电磁天线2、电流传感器4、电压传感器5和瓦斯传感器3与声电瓦斯同步监测仪6的相应传感器输入接口连接；声电瓦斯同步监测仪6的通信接口与通信分站7的输入端连接，通信分站7通过光纤网9和交换机13与监测中心机10和监测终端机11连接；分站电源8与声电瓦斯同步监测仪6的的稳压电路连接；声波探头1、电磁天线2、瓦斯传感器3、电流传感器4及电压传感器5与声电瓦斯同步监测仪6连接构成监测器，多个监测器布置在井下采掘工作面或巷道监测区域内。Acoustic and electric gas real-time automatic monitoring system for coal and rock dynamic disasters, including acoustic wave probe, electromagnetic antenna, gas sensor, current sensor, voltage sensor, acoustic and electric gas synchronous monitor, communication substation, substation power supply, optical fiber network, monitoring center machine, Monitoring terminal; acoustic wave probe 1, electromagnetic antenna 2, current sensor 4, voltage sensor 5 and gas sensor 3 are connected with corresponding sensor input interfaces of acoustic electric gas synchronous monitor 6; communication interface and communication of acoustic electric gas synchronous monitor 6 The input end of the substation 7 is connected, and the communication substation 7 is connected to the monitoring center machine 10 and the monitoring terminal unit 11 through the optical fiber network 9 and the switch 13; the substation power supply 8 is connected to the voltage stabilizing circuit of the acoustic electric gas synchronous monitor 6; The acoustic wave probe 1, the electromagnetic antenna 2, the gas sensor 3, the current sensor 4 and the voltage sensor 5 are connected with the acoustic-electric gas synchronous monitor 6 to form a monitor, and the plurality of monitors are arranged in the underground mining working face or the roadway monitoring area.
所述的声电瓦斯同步监测仪包括声波探头接口、电磁天线接口、瓦斯传感器接口、电流传感器接口、电压传感器接口、信号调理器、信号转换电路、微处理器、数据存储器、显
示器和通信接口、稳压电路；声波探头接口与声波信号调理器输入端连接，电磁天线接口与电磁信号调理器输入端连接，瓦斯传感器接口、电流传感器接口、电压传感器接口分别与相应信号转换电路连接；信号调理器和信号转换电路的输出端与微处理器输入端连接；通信接口输入端、显示器、键盘和数据存储器均与微处理器的I/O接口连接；微处理器输出端与通信接口连接；稳压电路为声电瓦斯同步监测仪和传感器提供所需直流电源。The acoustic electric gas synchronous monitor comprises an acoustic wave probe interface, an electromagnetic antenna interface, a gas sensor interface, a current sensor interface, a voltage sensor interface, a signal conditioner, a signal conversion circuit, a microprocessor, a data memory, and a display
The display device and the communication interface and the voltage stabilization circuit; the acoustic wave probe interface is connected with the input end of the acoustic signal conditioner, the electromagnetic antenna interface is connected with the input end of the electromagnetic signal conditioner, and the gas sensor interface, the current sensor interface, and the voltage sensor interface are respectively converted with corresponding signals. The circuit connection; the output of the signal conditioner and the signal conversion circuit is connected to the input of the microprocessor; the input end of the communication interface, the display, the keyboard and the data memory are all connected with the I/O interface of the microprocessor; the output of the microprocessor is The communication interface is connected; the voltage stabilizing circuit provides the required DC power for the acoustic-electric gas synchronous monitor and the sensor.
下面对部分组成分别予以说明，即：1、电磁天线；2、声波探头；3、信号调理器；4、声电瓦斯同步监测仪；5、稳压电路；6、通信接口；7、通信分站；8、监测中心机。The following describes the components separately, namely: 1, electromagnetic antenna; 2, acoustic probe; 3, signal conditioner; 4, acoustic and electric gas synchronous monitor; 5, voltage regulator circuit; 6, communication interface; Substation; 8, monitoring center machine.
1)电磁天线1) Electromagnetic antenna
电磁天线可为宽频天线或超低频天线。超低频天线通频带为30～1000Hz，灵敏度高，具有定向特点。宽频天线的上限频率不低于500kHz，带宽不小于500kHz，灵敏度高，具有定向特点。The electromagnetic antenna can be a broadband antenna or an ultra low frequency antenna. The ultra-low frequency antenna has a passband of 30 to 1000 Hz, high sensitivity and directional characteristics. The upper limit frequency of the broadband antenna is not less than 500 kHz, the bandwidth is not less than 500 kHz, the sensitivity is high, and the orientation is characterized.
2)声波探头2) Acoustic probe
声波探头可为声发射探头、地音探头或微震探头。The sonic probe can be an acoustic emission probe, a geophone probe or a microseismic probe.
3)信号调理器3) Signal Conditioner
主要用于把天线和探头接收的信号进行放大、滤波等，放大倍数可调节，其输出直接送入微处理器的模数转换器进行转换。It is mainly used to amplify and filter the signals received by the antenna and the probe. The amplification factor can be adjusted, and the output is directly sent to the analog-to-digital converter of the microprocessor for conversion.
4)声电瓦斯同步监测仪4) Acoustic and electric gas synchronous monitor
由微处理器、信号调理器、信号转换器、显示器、数据存储器、信号输出电路、电源、按键等构成，从而实现对声波、电磁、瓦斯、电流、电压信号及波形的同步采集、显示、存储和输出。It is composed of a microprocessor, a signal conditioner, a signal converter, a display, a data memory, a signal output circuit, a power supply, a button, etc., thereby realizing synchronous acquisition, display, and storage of sound waves, electromagnetic waves, gas, current, voltage signals, and waveforms. And output.
主要技术指标：Main Specifications:
a)防爆型式：ExibI本质安全型；a) Explosion-proof type: ExibI intrinsically safe;
b)接收电磁波信号频率：30Hz～500kHz；b) receiving electromagnetic wave signal frequency: 30Hz ~ 500kHz;
c)接收声波信号频率：1Hz～100kHz；c) receiving sound wave signal frequency: 1 Hz ~ 100 kHz;
d)采样速率：1kHz～1MHz可调，满足不同需要；d) sampling rate: adjustable from 1 kHz to 1 MHz to meet different needs;
e)记录方式：声电瓦斯同步监测仪连续、自动处理，在本机生成记录文件，同时实时输出至地面监测中心记录；e) Recording mode: The sound and electricity gas synchronous monitor is processed continuously and automatically, and the log file is generated in the machine, and is output to the ground monitoring center record in real time;
f)数据存储：采用SD/TF卡作为存储设备，数据存储容量大于8GB；f) Data storage: SD/TF card is used as the storage device, and the data storage capacity is greater than 8 GB;
5)稳压电路5) Voltage regulator circuit
本监测器由外部电源供电，也可直接使用通信分站提供的电源，工作电压为15～32VDC。通过宽电压输入电源模块K7805提供固定的+5V电源，供数字电路部分使用。通过宽电压输入电源模块K7812提供固定的+12V电源，供信号调理器部分使用。The monitor is powered by an external power supply, and can also directly use the power supply provided by the communication substation, and the working voltage is 15 to 32 VDC. A fixed +5V power supply is provided through the wide voltage input power supply module K7805 for use in the digital circuit section. A fixed +12V power supply is provided through the wide voltage input power supply module K7812 for use in the signal conditioner section.
6)通信接口6) Communication interface
具有五种信号输出方式，分别为RS485信号接口，4～20mA信号接口，200～1000Hz信号接口、CAN总线接口、以太网接口，可适应不同的监测系统要求，均可通过电缆与通信分站进行联接，实现测试数据实时传输到监测中心。There are five kinds of signal output modes, namely RS485 signal interface, 4~20mA signal interface, 200~1000Hz signal interface, CAN bus interface, Ethernet interface, which can adapt to different monitoring system requirements, all can be carried out by cable and communication substation. Connect, real-time transmission of test data to the monitoring center.
7)通信分站7) Communication substation
通信分站为矿井监测监控系统中的井下分站，能够接收来自声电瓦斯同步监测仪的监测数据及波形数据，并上传给监测中心机。
The communication substation is a downhole substation in the mine monitoring and monitoring system, which can receive monitoring data and waveform data from the acoustic electricity gas synchronous monitor and upload it to the monitoring center machine.
8)监测中心机8) Monitoring center machine
监测中心机由数据存储服务器、数据实时分析服务器、数据备份服务器、系统管理服务器组成。The monitoring center machine is composed of a data storage server, a data real-time analysis server, a data backup server, and a system management server.
本发明的自动监测方法是：The automatic monitoring method of the present invention is:
声电瓦斯同步监测仪接入声波探头、电磁天线和瓦斯传感器，同步接收声波、电磁辐射和瓦斯浓度实时信号及波形，能够同步反映工作面前方煤岩体受载、变形破裂、瓦斯渗流涌出情况、信号波形特征、频谱特征及其变化；接入电压传感器监测动力电缆通电情况，接入电流传感器监测机电设备工作情况。The acoustic and electric gas synchronous monitor is connected to the acoustic wave probe, the electromagnetic antenna and the gas sensor, and synchronously receives the real-time signals and waveforms of the acoustic wave, electromagnetic radiation and gas concentration, and can synchronously reflect the loading, deformation and rupture of the coal rock mass in front of the working face, and the gas seepage out. Situation, signal waveform characteristics, spectrum characteristics and their changes; access voltage sensor to monitor the power supply of the power cable, access to the current sensor to monitor the operation of the electromechanical equipment.
通过声波、电磁和瓦斯信号突变特征及声电信号频谱特征，结合电压、电流监测结果识别机电设备干扰、传感器移设及工作面采掘扰动影响：当监测的声波、电磁信号发生突变，且声电信号具有机电设备干扰的频谱特征，电压和电流信号也发生突变时，表明声波、电磁信号为机电设备干扰所致；当监测的声波、电磁信号发生突变，声电信号具有人为移设传感器特征频谱，电压和电流信号未发生突变时，表明声波、电磁信号为声波探头和电磁天线移动所致；当声波、电磁和瓦斯信号具有突变增长及稳定衰减变化特征时，表明工作面进行采掘活动；监测得到的声波信号和电磁信号滤除干扰信号后得到有效声波信号和有效电磁信号。Through the abrupt characteristics of acoustic wave, electromagnetic and gas signals and the spectral characteristics of acoustic and electrical signals, combined with the monitoring results of voltage and current, the interference of electromechanical equipment, sensor displacement and the influence of mining surface mining disturbance are recognized: when the monitored sound waves and electromagnetic signals are abrupt, and the sound and electricity are The signal has the spectral characteristics of the interference of the electromechanical equipment. When the voltage and current signals are also abrupt, it indicates that the acoustic wave and electromagnetic signal are caused by the interference of the electromechanical equipment. When the monitored acoustic and electromagnetic signals are abrupt, the acoustic and electrical signals have artificially shifted the characteristic spectrum of the sensor. When the voltage and current signals are not abrupt, it indicates that the acoustic wave and electromagnetic signal are caused by the movement of the acoustic probe and the electromagnetic antenna; when the acoustic, electromagnetic and gas signals have the characteristics of sudden increase and stable attenuation, it indicates that the working face is performing mining activities; monitoring The obtained acoustic wave signal and electromagnetic signal filter out the interference signal to obtain an effective acoustic wave signal and an effective electromagnetic signal.
在需要监测的测点或工作面安装声波探头、电磁天线、瓦斯传感器，将电磁天线有效接收方向对准煤岩体的被监测区域，并固定好天线，天线与被测区域的距离不大于30米为宜；声波探头依据所测频段选择对应的耦合与固定方式，监测煤岩体内声波信号，瓦斯传感器按照《煤矿安全规程》的要求安设；在监测区域内机电设备的动力电缆上安装电流传感器和电压传感器；天线、探头及各种传感器分别接入声电瓦斯同步监测仪的相应接口，连接通信分站、分站电源、交换机和监测中心机；通过摇控器按键和显示器，根据现场传感器的布置情况，设置声电瓦斯同步监测仪工作参数，如监测通道、触发方式、采样频率、存储方案、通信方式等，参数也可由监测中心通过软件远程设置。声电瓦斯同步监测仪同步监测测点区域或工作面内声波、电磁、瓦斯浓度、电流及电压信号，并将数掘上传到监测中心机；监测中心机分析各信号变化情况，识别机电设备干扰、采掘活动及探头、天线移设情况和有效信号；通过有效声波信号和有效电磁信号变化及频谱特征，结合瓦斯信号变化特征预警工作面前方异常区域及煤与瓦斯突出等煤岩动力灾害危险性，当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续或波动式持续增长趋势，信号强度和趋势变化未超过区域异常相应临界值时，表明工作面前方为地质或应力异常区域；当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续、波动式增长趋势，且信号强度或趋势变化超过相应动力灾害危险性相应临界值时，表明有动力灾害危险性。
Install an acoustic wave probe, an electromagnetic antenna, and a gas sensor on the measuring point or working surface to be monitored. Align the effective receiving direction of the electromagnetic antenna with the monitored area of the coal rock body, and fix the antenna. The distance between the antenna and the measured area is not more than 30. The meter is suitable for the sound wave probe according to the measured frequency band, and the acoustic wave signal in the coal rock is monitored. The gas sensor is installed according to the requirements of the “Safety Regulations for Coal Mines”; the power cable of the electromechanical equipment is installed in the monitoring area. Current sensor and voltage sensor; antenna, probe and various sensors are respectively connected to the corresponding interfaces of the sound and electricity gas synchronous monitor, connected to the communication substation, substation power supply, switch and monitoring center machine; through the remote control button and display, according to The layout of the on-site sensor, set the working parameters of the acoustic-electric gas synchronous monitor, such as monitoring channel, trigger mode, sampling frequency, storage scheme, communication mode, etc. The parameters can also be set remotely by the monitoring center through software. The acoustic and electric gas synchronous monitor synchronously monitors the acoustic wave, electromagnetic, gas concentration, current and voltage signals in the measuring point area or working surface, and uploads the number to the monitoring center machine; the monitoring center machine analyzes the changes of each signal and identifies the interference of the electromechanical equipment. Excavation activities and probes, antennas and effective signals; through effective acoustic signals and effective electromagnetic signal changes and spectral characteristics, combined with gas signal change characteristics, early warning of abnormal areas in front of the working face and coal and gas outburst, etc. When two or more of the effective sound wave, electromagnetic signal and gas signal show continuous or volatility, the signal intensity and trend change do not exceed the corresponding critical value of the regional anomaly, indicating that the front of the working face is a geological or stress anomaly area; Two or more of the effective sound waves, electromagnetic signals and gas signals show a continuous, volatility growth trend, and when the signal strength or trend changes exceed the corresponding critical value of the corresponding dynamic hazard risk, it indicates the risk of dynamic disaster.
Claims (3)
- 一种煤岩动力灾害声电瓦斯实时自动监测系统，其特征在于：包括声波探头、电磁天线、瓦斯传感器、通信分站、分站电源、光纤网、监测中心机、监测终端机、声电瓦斯同步监测仪、电流传感器和电压传感器；声波探头、电磁天线、电流传感器、电压传感器和瓦斯传感器与声电瓦斯同步监测仪的相应传感器输入接口连接；声电瓦斯同步监测仪的通信接口与通信分站的输入端连接，通信分站通过交换机、光纤网与监测中心机和监测终端机连接；分站电源与声电瓦斯同步监测仪的的稳压电路连接；声波探头、电磁天线、瓦斯传感器、电流传感器及电压传感器与声电瓦斯同步监测仪连接构成监测器，多个监测器布置在井下采掘工作面或巷道监测区域内。A real-time automatic monitoring system for sound and electricity gas of coal rock dynamic disaster, which comprises: acoustic wave probe, electromagnetic antenna, gas sensor, communication substation, substation power supply, optical fiber network, monitoring center machine, monitoring terminal machine, sound and electricity gas Synchronous monitor, current sensor and voltage sensor; sonic probe, electromagnetic antenna, current sensor, voltage sensor and gas sensor are connected with corresponding sensor input interfaces of acoustic and electric gas synchronous monitor; communication interface and communication points of acoustic and electric gas synchronous monitor The input end of the station is connected, the communication substation is connected to the monitoring center machine and the monitoring terminal through the switch, the optical fiber network; the substation power supply is connected with the voltage stabilizing circuit of the acoustic electricity gas synchronous monitor; the acoustic wave probe, the electromagnetic antenna, the gas sensor, The current sensor and the voltage sensor are connected with the acoustic-electric gas synchronous monitor to form a monitor, and the plurality of monitors are arranged in the underground mining face or the roadway monitoring area.
- 根据权利要求1所述的煤岩动力灾害声电瓦斯实时自动监测系统，其特征在于：所述的声电瓦斯同步监测仪包括声波探头接口、电磁天线接口、瓦斯传感器接口、电流传感器接口、电压传感器接口、信号调理器、信号转换电路、微处理器、数据存储器、显示器和通信接口、稳压电路；声波探头接口与声波信号调理器输入端连接，电磁天线接口与电磁信号调理器输入端连接，瓦斯传感器接口、电流传感器接口、电压传感器接口分别与相应信号转换电路连接；信号调理器和信号转换电路的输出端与微处理器输入端连接；通信接口输入端、显示器、键盘和数据存储器均与微处理器的I/O接口连接；微处理器输出端与通信接口连接；稳压电路为声电瓦斯同步监测仪和传感器提供所需直流电源。The real-time automatic monitoring system for coal-fired power disaster sound and electricity gas according to claim 1, wherein the acoustic-electric gas synchronous monitoring device comprises an acoustic wave probe interface, an electromagnetic antenna interface, a gas sensor interface, a current sensor interface, and a voltage. Sensor interface, signal conditioner, signal conversion circuit, microprocessor, data memory, display and communication interface, voltage regulator circuit; acoustic wave probe interface is connected with the input end of the acoustic signal conditioner, and the electromagnetic antenna interface is connected with the input end of the electromagnetic signal conditioner The gas sensor interface, the current sensor interface, and the voltage sensor interface are respectively connected to the corresponding signal conversion circuits; the output of the signal conditioner and the signal conversion circuit is connected to the input of the microprocessor; the input end of the communication interface, the display, the keyboard, and the data memory are all It is connected to the I/O interface of the microprocessor; the output of the microprocessor is connected to the communication interface; the voltage regulator circuit provides the required DC power for the acoustic-electric gas synchronous monitor and the sensor.
- 一种利用权利要求1所述煤岩动力灾害声电瓦斯实时自动监测系统的自动监测方法，其特征在于：在需要监测的测点或工作面安装声波探头、电磁天线、瓦斯传感器，在动力电缆上安装电流传感器和电压传感器，分别接入声电瓦斯同步监测仪的相应传感器输入接口，连接通信分站、分站电源、交换机和监测中心机；声电瓦斯同步监测仪同步接收声波、电磁、瓦斯浓度、电压和电流信号，并将数据实时上传到监测中心机；通过声波、电磁辐射和瓦斯浓度实时信号及波形，能够同步反映工作面前方煤岩体受载、变形破裂、瓦斯渗流涌出情况、信号波形特征、频谱特征及其变化，通过电压信号监测动力电缆通电情况，电流信号监测机电设备工作情况；监测中心机分析各信号变化情况，识别机电设备干扰、采掘活动及探头、天线移设情况和有效信号：当监测的声波、电磁信号发生突变，且声电信号具有机电设备干扰的频谱特征，电压和电流信号也发生突变时，表明声波、电磁信号为机电设备干扰所致；当监测的声波、电磁信号发生突变，声电信号具有人为移设传感器特征频谱，电压和电流信号未发生突变时，表明声波、电磁信号为声波探头和电磁天线移动所致；当声波、电磁和瓦斯信号具有突变增长及稳定衰减变化特征时，表明工作面进行采掘活动；监测得到的声波信号和电磁信号滤除干扰后得到有效声波信号和有效电磁信号；通过有效声波信号和有效电磁信号变化及频谱特征，结合瓦斯信号变化特征预警工作面前方异常区域及煤与瓦斯突出等煤岩动力灾害危险性：当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续或波动式增长趋势，且信号强度和趋势变化超过区域异常相应临界值时，表明工作面前方为地质异常区域；当有效声波、电磁信号和瓦斯信号中两个及以上呈现连续、波动式增长趋势，且信号强度或趋势变化超过动力灾害危险相应临界值时，表明有动力灾害危险性。 An automatic monitoring method for real-time automatic monitoring system for sound and gas of coal-fired power disasters according to claim 1, characterized in that: an acoustic wave probe, an electromagnetic antenna, a gas sensor, and a power cable are installed at a measuring point or a working surface to be monitored The current sensor and the voltage sensor are installed respectively, and respectively connected to the corresponding sensor input interfaces of the sound and electricity gas synchronous monitor, and connected to the communication substation, the substation power supply, the switch and the monitoring center machine; the acoustic and electric gas synchronous monitor synchronously receives the acoustic wave, the electromagnetic, Gas concentration, voltage and current signals, and upload the data to the monitoring center in real time; through the real-time signals and waveforms of sound waves, electromagnetic radiation and gas concentration, it can synchronously reflect the loading, deformation and rupture of coal and rock in front of the working face, and gas seepage Situation, signal waveform characteristics, spectrum characteristics and their changes, monitoring the power cable power condition through the voltage signal, current signal monitoring the operation of the electromechanical equipment; monitoring the central machine to analyze the changes of each signal, identifying the mechanical and electrical equipment interference, mining activities and probes, antenna shift Set the situation and effective signal: when monitoring The acoustic wave and electromagnetic signal are abrupt, and the acoustic and electrical signals have the spectral characteristics of the interference of the electromechanical equipment. When the voltage and current signals are also abrupt, it indicates that the acoustic wave and the electromagnetic signal are caused by the interference of the electromechanical equipment; when the monitored acoustic wave and electromagnetic signal are abruptly changed The acoustic and electrical signals have artificially shifted the characteristic spectrum of the sensor. When the voltage and current signals are not abrupt, it indicates that the acoustic waves and electromagnetic signals are caused by the movement of the acoustic probe and the electromagnetic antenna; when the acoustic, electromagnetic and gas signals have abrupt growth and stable attenuation changes When the feature is characteristic, it indicates that the working face carries out the mining activity; the detected acoustic wave signal and the electromagnetic signal filter out the interference to obtain the effective acoustic wave signal and the effective electromagnetic signal; through the effective acoustic wave signal and the effective electromagnetic signal change and the spectral characteristics, combined with the early warning of the change characteristic of the gas signal The risk of coal-rock dynamic hazard in the anomalous area ahead of the working face and coal and gas outburst: when two or more of the effective sound waves, electromagnetic signals and gas signals show a continuous or volatility growth trend, and the signal intensity and trend change exceed the regional anomaly corresponding When the threshold is In front of the surface is a geological anomaly area; when two or more of the effective sound waves, electromagnetic signals and gas signals show a continuous, undulating growth trend, and the signal strength or trend changes exceed the corresponding critical value of the dynamic disaster risk, indicating the risk of dynamic disaster Sex.
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| Publication number | Publication date |
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| AU2017375855A1 (en) | 2019-07-25 |
| CN106761931B (en) | 2018-08-21 |
| AU2017375855B2 (en) | 2020-10-22 |
| CN106761931A (en) | 2017-05-31 |
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